NASA Tech Cuts Airframe Noise by 70% on GIII Testbed | Aviation International News

Maintenance and Modifications

NASA Tech Cuts Airframe Noise by 70% on GIII Testbed

Acoustic Research Measurement (ARM) flights tested technologies such as landing gear fairings and the FlexSys morphing-wing flap

NASA's Acoustic Research Measurement (ARM) flights tested technologies such as landing gear fairings and the FlexSys morphing-wing flap on a Gulfstream GIII testbed. Using an 185-sensor microphone array deployed on the Rogers Dry Lake at Edwards Air Force Base in California, the agency found that airframe noise can be reduced by more than 70 percent on landing approach using these non-propulsive technologies. (Photos: NASA/Ken Ulbrich)

By Chad Trautvetter • Online Editor

June 27, 2018

A series of NASA test flights with a Gulfstream GIII testbed last month demonstrated that airframe noise can be reduced by more than 70 percent on landing approach using non-propulsive technologies. The Acoustic Research Measurement (ARM) flights, conducted at the agency’s Armstrong Flight Research Center in California, tested technologies such as landing gear fairings and the FlexSys morphing-wing flap. For the noise tests, the modified GIII flew at an altitude of 350 feet over a 185-sensor microphone array deployed on the Rogers Dry Lake at Edwards Air Force Base in California.

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